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author_ss:"Reiner, U."
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classification_ss:"ST 270 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme"
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year_i:[1990 TO 2000}
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Reiner, U.: Anfragesprachen für Informationssysteme (1991)
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